Component mounting device

Abstract

A component mounting device includes a mounting head that mounts a component at a mounting position on a substrate, an imaging unit capable of imaging the mounting position from a plurality of fields of view, imaging directions of which are different from each other, and a controller that selects a success or failure determination field of view used for success or failure determination of whether or not the component has been mounted at the mounting position from the plurality of fields of view according to a state of a shield around the mounting position.

The invention claimed is: 
     
       1. A component mounting device comprising:
 a mounting head that mounts a component at a mounting position on a substrate; 
 an imaging unit capable of imaging the mounting position from a plurality of fields of view, imaging directions of which are different from each other; and 
 a controller that selects one of the plurality of fields of view as a success or failure determination field of view used for success or failure determination of whether or not the component has been mounted at the mounting position according to a state of a shield around the mounting position, wherein 
 the shield around the mounting position includes a nozzle of the mounting head that has suctioned the component, and 
 the controller is configured to acquire a nozzle shielding percentage in each of the plurality of fields of view, to select the success or failure determination field of view from the plurality of fields of view at least based on the nozzle shielding percentage acquired from the controller in each of the plurality of fields of view, and to perform the success or failure determination based on the success or failure determination field of view that is selected from among the plurality of fields of view. 
 
     
     
       2. The component mounting device according to  claim 1 , wherein
 the shield around the mounting position includes, in addition to the nozzle of the mounting head that suctioned the component, at least one shield of the component before mounting the component suctioned by the mounting head and the component mounted on the substrate around the mounting position. 
 
     
     
       3. The component mounting device according to  claim 1 , wherein
 the plurality of fields of view, the imaging directions of which are different from each other, are positioned such that the imaging directions of the plurality of fields of view are at different inclination angles from each other with respect to a substrate surface of the substrate on which the component is mounted. 
 
     
     
       4. The component mounting device according to  claim 3 , wherein
 the plurality of fields of view, the imaging directions of which are different from each other, are positioned adjacent to each other in a vertical plane with respect to the substrate surface. 
 
     
     
       5. The component mounting device according to  claim 1 , wherein
 the imaging unit includes: 
 an imaging section that images the mounting position, and 
 a first optical system that divides a field of view of the imaging section into the plurality of fields of view, the imaging directions of which are different from each other. 
 
     
     
       6. The component mounting device according to  claim 5 , wherein
 the mounting head includes a plurality of mounting heads, 
 the first optical system of the imaging unit includes a plurality of first optical systems that correspond in number to the plurality of mounting heads, and 
 the imaging unit further includes a second optical system that divides the field of view of the imaging section into each of the plurality of first optical systems. 
 
     
     
       7. The component mounting device according to  claim 1 , wherein
 the controller is configured to acquire, from the imaging unit, respective captured images from the plurality of fields of view and to select, from the respective captured images from the plurality of fields of view, a captured image from the success or failure determination field of view according to the state of the shield around the mounting position. 
 
     
     
       8. The component mounting device according to  claim 1 , wherein
 the controller is configured to select the success or failure determination field of view from the plurality of fields of view according to at least one of a type of the component to be mounted at the mounting position and a background of the component around the mounting position in addition to the state of the shield around the mounting position. 
 
     
     
       9. The component mounting device according to  claim 1 , wherein
 the imaging unit is configured to image the mounting position before mounting of the component and to image the mounting position after mounting of the component from each of the plurality of fields of view, and 
 the controller is configured to make the success or failure determination based on a captured image of the mounting position before mounting of the component from the success or failure determination field of view and a captured image of the mounting position after mounting of the component from the success or failure determination field of view, both of which have been selected from respective captured images from the plurality of fields of view. 
 
     
     
       10. The component mounting device according to  claim 1 , wherein
 the controller is configured to acquire a height of a substrate surface of the substrate with respect to a reference surface based on a captured image of the mounting position from each of the plurality of fields of view and to correct a determination region used for the success or failure determination in a captured image from the success or failure determination field of view based on the acquired height of the substrate surface.